Infusion pump system

Abstract

Ambulatory modular infusion pump systems are provided, including a housing having a housing front and a housing back, a controller coupled to the housing front, and one or more pump modules disposed within the housing. Each pump module includes a door assembly including a door having a door securement, a channel housing, a cartridge gasket, at least one sensor, a plurality of pump fingers, a frame assembly and a motor. One or more button assemblies are disposed on the housing front, each button assembly having a button disposed adjacent a corresponding pump module and configured to release the door of the corresponding pump module when the button is moved to a release position. Methods of single handed operation of and configuration of ambulatory modular infusion pump systems are also provided.

What is claimed is: 
     
         1 . An ambulatory modular infusion pump system, comprising:
 a housing comprising a housing front and a housing back;   a controller coupled to the housing front;   one or more pump modules disposed within the housing, each pump module comprising:
 a door assembly comprising a door having a door securement; 
 a channel housing; 
 a cartridge gasket; 
 at least one sensor; 
 a plurality of pump fingers; 
 a frame assembly; and 
 a motor; and 
   one or more button assemblies disposed on the housing front, each button assembly comprising a button disposed adjacent a corresponding pump module and configured to release the door of the corresponding pump module when the button is moved to a release position.   
     
     
         2 . The ambulatory modular infusion pump system of  claim 1 , wherein the button assembly comprises an engagement latch coupled to a button assembly shaft, wherein the button assembly shaft exerts a downward biasing force on the engagement latch. 
     
     
         3 . The ambulatory modular infusion pump system of  claim 2 , wherein the engagement latch comprises a curved surface configured to receive a finger. 
     
     
         4 . The ambulatory modular infusion pump system of  claim 1 , wherein the button assembly comprises an engagement portion configured to be received by a channel disposed on the door securement. 
     
     
         5 . The ambulatory modular infusion pump system of  claim 4 , wherein the door securement comprises a door shaft that exerts a downward biasing force on the engagement portion. 
     
     
         6 . The ambulatory modular infusion pump system of  claim 1 , wherein the door assembly comprises:
 an inner face of the door, the inner face comprising one or more securement mount points; and   the door securement comprising one or more door mount points corresponding to the one or more securement mount points,   wherein the door securement is coupled to the inner face via the one or more door mount points mated with the one or more securement mount points.   
     
     
         7 . The ambulatory modular infusion pump system of  claim 6 , wherein the door comprises a latch deformation configured to receive a portion of a latch extending from the pump module. 
     
     
         8 . The ambulatory modular infusion pump system of  claim 7 , wherein the door securement comprises a latch portal disposed in a door securement housing and aligned with the latch deformation, the latch portal configured to receive a portion of the latch extending from the pump module. 
     
     
         9 . The ambulatory modular infusion pump system of  claim 8 , wherein the door securement further comprises a slidable carriage disposed within the door securement housing adjacent to the latch portal. 
     
     
         10 . The ambulatory modular infusion pump system of  claim 9 , wherein the slidable carriage comprises an eye configured to engage with the latch when the door is in a secured position. 
     
     
         11 . The ambulatory modular infusion pump system of  claim 8 , wherein the door securement further comprises a guide groove disposed on the door securement housing, the guide groove configured to receive a portion of a guide pin of the door assembly to limit the range of motion of the door securement. 
     
     
         12 . The ambulatory modular infusion pump system of  claim 1 , wherein the housing comprises a battery configured to power the ambulatory modular infusion pump system. 
     
     
         13 . The ambulatory modular infusion pump system of  claim 1 , wherein the controller comprises at least one of a hardened keypad and a sealed keypad configured to be operated by a chemical resistant glove. 
     
     
         14 . A sealed ambulatory modular infusion pump system, comprising:
 a housing comprising a housing front and a housing back, the housing front comprising a plurality of spaces, wherein the housing back is secured to the housing front by one or more securing members;   a controller coupled to the housing front;   one or more pump modules, each pump module removably disposed within one of the plurality of spaces in the housing front, each pump module comprising a door assembly comprising a door and a door securement;   an insert coupled to each of the plurality of spaces that do not contain a pump module, each insert configured to provide sealing integrity for that portion of the housing; and   one or more button assemblies disposed on the housing front, each button assembly comprising a button disposed adjacent a corresponding pump module and configured to release the door of the corresponding pump module when the button is moved to a release position.   
     
     
         15 . The sealed ambulatory modular infusion pump system of  claim 14 , wherein each button assembly comprises:
 an engagement latch coupled to a button assembly shaft, the button assembly shaft exerting a downward biasing force on the engagement latch; and   an engagement portion configured to be received by a channel disposed on the door securement, wherein the door securement comprises a door shaft that exerts a downward biasing force on the engagement portion.   
     
     
         16 . The sealed ambulatory modular infusion pump system of  claim 14 , wherein the door comprises a latch deformation and the door securement comprises a latch portal aligned with the latch deformation, the latch deformation and the latch portal each configured to receive a portion of a latch extending from the pump module. 
     
     
         17 . The sealed ambulatory modular infusion pump system of  claim 16 , wherein the door securement comprises:
 a slidable carriage disposed within a door securement housing adjacent to the latch portal, the slidable carriage comprises an eye configured to engage with the latch when the door is in a secured position; and   a guide groove disposed on the door securement housing, the guide groove configured to receive a portion of a guide pin of the door assembly to limit the range of motion of the door securement.   
     
     
         18 . The sealed ambulatory modular infusion pump system of  claim 16 , further comprising a battery configured to power the ambulatory modular infusion pump system, and the controller comprises a hardened and sealed keypad configured to be operated by a chemical resistant glove. 
     
     
         19 . A method of single handed operation of the ambulatory modular infusion pump system of  claim 1 , the method comprising:
 lifting one of the button assemblies;   releasing the door of the corresponding pump module;   if an existing tube set is disposed in the pump module, removing the existing tube set;   grasping a replacement tube set;   inserting the replacement tube set into the pump module; and   closing the door of the pump module.   
     
     
         20 . A method of configuring the ambulatory modular infusion pump system of  claim 14 , the method comprising:
 removing the one or more securing members securing the housing back to the housing front;   removing the housing back from the housing front;   if an existing pump module is disposed in a selected space in the front housing and a replacement pump module is desired, lifting out the existing pump module from the selected space and setting in the replacement pump module in the selected space;   if an existing pump module is disposed in the selected space in the front housing and no pump module in the selected space is desired, lifting out the existing pump module from the selected space and coupling a sealing insert to the selected space;   if a sealing insert is coupled to the selected space and a new pump module in the selected space is desired, removing the insert and setting in the new pump module in the selected space;   coupling the housing rear to the housing front; and   replacing the one or more securing members to secure the housing back to the housing front.